Oh dear! I see what you mean. Well, at least she's in China. That's how many thousand miles away?!?
I don't remember knowing the F word at such an early age, either. I remember pushing the boundaries at about 8, by saying sh*t (learnt from my older sister!). My sister held me down and my mother rubbed the soap into my mouth. A very harsh (and not very tasty!!) lesson! Evil buggers, the pair of them.

They weren't always so mean, honest, lol!
BTW I am allowed to say the s word in front of mother now!